公开(公告)号：US11365697B2

公开(公告)日：2022-06-21

申请号：US16949137

申请日：2020-10-15

Applicant: Caterpillar Inc.

Inventor： Rajesh N. Nair ,  Samuel Were ,  James Harris Mutti

IPC: F02D41/02 ,  F02B37/24 ,  F02D41/10 ,  F02D41/14 ,  F02D41/00

Abstract: A controller may determine that a regeneration process associated with an engine of a machine is active. The controller may obtain, based on determining that the regeneration process is active, information concerning a speed of the engine, information concerning a load of the engine, and information concerning a fuel rate of the engine. The controller may select, based on the information concerning the speed of the engine, the information concerning the load of the engine, and the information concerning the fuel rate of the engine, a control process, of a plurality of control processes, to control an intake manifold absolute pressure (IMAP) of the engine to facilitate the regeneration process. The controller may cause, according to the selected control process, adjustment of one or more components of a variable geometry turbocharger (VGT) of the engine and an intake throttle valve (ITV) of the engine.

公开(公告)号：US20140298775A1

公开(公告)日：2014-10-09

申请号：US14309139

申请日：2014-06-19

Applicant: Caterpillar Inc.

Inventor： Michael A. Snopko ,  Rajesh N. Nair

IPC: F01N3/023

CPC classification number: F01N3/023 ,  F01N9/002 ,  F01N2560/05 ,  F01N2560/12 ,  F01N2900/0408 ,  Y02T10/47

Abstract: A regeneration control system for an exhaust filter in an internal combustion engine system includes a first sensing mechanism for monitoring an exhaust flow resistance of the exhaust filter, and a second sensing mechanism for monitoring an attenuation of electromagnetic energy transmitted through the exhaust filter. The regeneration control system further includes an electronic controller coupled with the sensing mechanisms and configured to output a filter regeneration command responsive to an amount of particulate matter trapped within the exhaust filter. The electronic controller is further configured to weight data from the first and second sensing mechanisms in determining the amount of particulate matter. Weighting of the data may be responsive to an operating state of the internal combustion engine system. Related methodology is also disclosed.

Abstract translation: 用于内燃机系统中的排气过滤器的再生控制系统包括用于监测排气过滤器的排气阻力的第一感测机构和用于监测通过排气过滤器传输的电磁能的衰减的第二感测机构。 再生控制系统还包括与感测机构耦合的电子控制器，其被配置为响应于被排放在排气过滤器内的颗粒物质的量来输出过滤器再生命令。 电子控制器还被配置为在确定颗粒物质的量时对来自第一和第二感测机构的数据进行加权。 数据的加权可以响应于内燃机系统的运行状态。 还公开了相关方法。